公开(公告)号：US10244426B2

公开(公告)日：2019-03-26

申请号：US14799515

申请日：2015-07-14

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Alexei Gorokhov ,  Mariam Motamed ,  Raghu Challa ,  Joshua MacDonald ,  Kai Xie ,  Vivek Padi ,  Alex Mateen ,  Juchuan Ma

IPC: H04L27/00 ,  H04L27/26 ,  H04W28/02 ,  H04W56/00 ,  H04W76/28

Abstract: Aspects of frequency error detection with Physical Broadcast CHannel (PBCH) frequency hypothesis are described. For example, a method and apparatus are disclosed for frequency tracking in a user equipment (UE) may include detecting a change in frequency that exceeds a pull-in range of a frequency tracking loop (FTL) of the UE. The method and apparatus may also include identifying a tracking recovery frequency in response to the change in frequency being detected, wherein the tracking recover frequency is identified from a set of frequency hypotheses and based on decoding of the PBCH received by the UE. The method and apparatus may further include updating the FTL with the tracking recovery frequency.